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NEID Rossiter-McLaughlin Measurement of TOI-1268b: A Young Warm Saturn Aligned with Its Cool Host Star
Dong, Jiayin; Huang, Chelsea X.; Zhou, George et al.
2022 • In Astrophysical Journal, 926, p. 7
Peer Reviewed verified by ORBi
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https://hdl.handle.net/2268/289481
DOI
10.3847/2041-8213/ac4da0
arXiV
arXiv:2201.12836
 

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Abstract :
[en] Close-in gas giants present a surprising range of stellar obliquity, the angle between a planet's orbital axis and its host star's spin axis. It is unclear whether the obliquities reflect the planets' dynamical history (e.g., aligned for in situ formation or disk migration versus misaligned for high-eccentricity tidal migration) or whether other mechanisms (e.g., primordial misalignment or planet-star interactions) are more important in sculpting the obliquity distribution. Here we present the stellar obliquity measurement of TOI-1268 (TIC-142394656, V mag ~ 10.9), a young K-type dwarf hosting an 8.2 day period, Saturn-sized planet. TOI-1268's lithium abundance and rotation period suggest the system age between the ages of the Pleiades cluster (~120 Myr) and the Prasepe cluster (~670 Myr). Using the newly commissioned NEID spectrograph, we constrain the stellar obliquity of TOI-1268 via the Rossiter-McLaughlin effect from both radial velocity and Doppler tomography signals. The 3σ upper bounds of the projected stellar obliquity ∣λ∣ from both models are below 60°. The large host star separation (a/R⋆ ~ 17), combined with the system's young age, makes it unlikely that the planet has realigned its host star. The stellar obliquity measurement of TOI-1268 probes the architecture of a young gas giant beyond the reach of tidal realignment (a/R ≳ 10) and reveals an aligned or slightly misaligned system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Dong, Jiayin;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
Huang, Chelsea X.;  University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia, Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Zhou, George;  University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia
Dawson, Rebekah I.;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Institute for Computational and Data Sciences, The Pennsylvania State University, University Park, PA 16802, USA, Center for Astrostatistics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
Stefánsson, Gumundur K.;  Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08540, USA
Bender, Chad F.;  Steward Observatory, The University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA
Blake, Cullen H.;  Department of Physics and Astronomy, University of Pennsylvania, 209 S 33rd Street, Philadelphia, PA 19104, USA
Ford, Eric B.;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Institute for Computational and Data Sciences, The Pennsylvania State University, University Park, PA 16802, USA, Center for Astrostatistics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
Halverson, Samuel;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
Kanodia, Shubham;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Penn State Extraterrestrial Intelligence Center, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
Mahadevan, Suvrath;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
McElwain, Michael W.;  Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Ninan, Joe P.;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
Robertson, Paul;  Department of Physics &, Astronomy, University of California, Irvine, CA 92697, USA
Roy, Arpita;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA, Department of Physics and Astronomy, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA
Schwab, Christian;  Department of Physics and Astronomy, Macquarie University, Balaclava Road, North Ryde, NSW 2109, Australia
Stevens, Daniel J.;  Department of Astronomy &, Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA, Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
Terrien, Ryan C.;  Carleton College, One North College Street, Northfield, MN 55057, USA
Vanderburg, Andrew;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Kraus, Adam L.;  Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA
Douglas, Stephanie;  Department of Physics, Lafayette College, 730 High Street, Easton, PA 18042, USA
Newton, Elisabeth;  Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755, USA
Rampalli, Rayna;  Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755, USA
Krolikowski, Daniel M.;  Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA
Collins, Karen A.;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Rodriguez, Joseph E.;  Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
Feliz, Dax L.;  Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
Srdoc, Gregor;  Kotizarovci Observatory, Sarsoni 90, 51216 Viskovo, Croatia
Ziegler, Carl;  Department of Physics, Engineering and Astronomy, Stephen F. Austin State University, 1936 North Street, Nacogdoches, TX 75962, USA
Barkaoui, Khalid ;  Université de Liège - ULiège > Astrobiology
Pozuelos, Francisco J.  ;  Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium, Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Belgium
Jehin, Emmanuel  ;  Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Michaël, Gillon;  Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium
Benkhaldoun, Zouhair;  Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco
Lewin, Pablo;  The Maury Lewin Astronomical Observatory, Glendora, CA 91741, USA
Forés-Toribio, Raquel;  Departamento de Astronomía y Astrofísica, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain, Observatorio Astronómico, Universidad de Valencia, E-46980 Paterna, Valencia, Spain
Muñoz, Jose A.;  Departamento de Astronomía y Astrofísica, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain, Observatorio Astronómico, Universidad de Valencia, E-46980 Paterna, Valencia, Spain
McLeod, Kim K.;  Department of Astronomy, Wellesley College, Wellesley, MA 02481, USA
Özyurt, Fiona Powers;  Department of Astronomy, Wellesley College, Wellesley, MA 02481, USA
Horta, Ferran Grau;  Observatori de Ca l'Ou, Carrer de dalt 18, E-08282 Sant Martí Sesgueioles, Barcelona, Spain
Murgas, Felipe;  I nstituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain, Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain
Latham, David W.;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Quinn, Samuel N.;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Bieryla, Allyson;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Howell, Steve B.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Gnilka, Crystal L.;  NASA Ames Research Center, Moffett Field, CA 94035, USA, NASA Exoplanet Science Institute, Caltech/IPAC, Mail Code 100-22, 1200 E. California Boulevard, Pasadena, CA 91125, USA
Ciardi, David R.;  NASA Exoplanet Science Institute, Caltech/IPAC, Mail Code 100-22, 1200 E. California Boulevard, Pasadena, CA 91125, USA
Lund, Michael B.;  NASA Exoplanet Science Institute, Caltech/IPAC, Mail Code 100-22, 1200 E. California Boulevard, Pasadena, CA 91125, USA
Dressing, Courtney D.;  Department of Astronomy, University of California, Berkeley, CA, USA
Giacalone, Steven;  Department of Astronomy, University of California, Berkeley, CA, USA
Savel, Arjun B.;  Department of Astronomy, University of Maryland, College Park, MD, USA
Strakhov, Ivan A.;  Sternberg Astronomical Institute, M.V. Lomonosov Moscow State University, 13, Universitetskij pr., 119234, Moscow, Russia
Belinski, Alexander A.;  Sternberg Astronomical Institute, M.V. Lomonosov Moscow State University, 13, Universitetskij pr., 119234, Moscow, Russia
Ricker, George R.;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Seager, S.;  Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Winn, Joshua N.;  Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08540, USA
Jenkins, Jon M.;  NASA Ames Research Center, Moffett Field, CA 94035, USA
Torres, Guillermo;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Paegert, Martin;  Center for Astrophysics ∣Harvard &, Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
More authors (49 more) Less
Language :
English
Title :
NEID Rossiter-McLaughlin Measurement of TOI-1268b: A Young Warm Saturn Aligned with Its Cool Host Star
Publication date :
01 February 2022
Journal title :
Astrophysical Journal
ISSN :
0004-637X
eISSN :
1538-4357
Publisher :
IOP Publishing, Bristol, Gb
Volume :
926
Pages :
L7
Peer reviewed :
Peer Reviewed verified by ORBi
Additional URL :
https://ui.adsabs.harvard.edu/abs/2022ApJ...926L...7D
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